Exploring the genetic etiology of low general cognitive ability from 14 to 36 months.
Dev Psychol
; 33(3): 544-8, 1997 May.
Article
em En
| MEDLINE
| ID: mdl-9149933
ABSTRACT
The genetic and environmental etiology of low general cognitive ability (g) during infancy and early childhood has not previously been investigated. The current study examined the genetic etiology of low cognitive ability at 14, 20, 24, and 36 months with twins from the MacArthur Longitudinal Twin Study. Low g groups were formed from the lowest 10th percentile at each age. Univariate probandwise concordance rates and DeFries-Fulker (J. C. DeFries & D. W. Fulker, 1985, 1988) multiple regression techniques suggest genetic etiology in low general cognitive ability groups. The stability of low general cognitive ability over time also appears to be primarily due to genetic factors. Although replication is necessary, these results suggest that the genetic etiology of low g during infancy and early childhood is at least as great as the heritability of g in the unselected population.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Aptidão
/
Meio Social
/
Cognição
/
Inteligência
Tipo de estudo:
Etiology_studies
/
Observational_studies
/
Prevalence_studies
/
Risk_factors_studies
Aspecto:
Determinantes_sociais_saude
Limite:
Child, preschool
/
Female
/
Humans
/
Infant
/
Male
Idioma:
En
Revista:
Dev Psychol
Ano de publicação:
1997
Tipo de documento:
Article